Search found 1488 matches
- Fri Apr 08, 2011 6:27 am
- Forum: Equipment Discussions
- Topic: Studio Flash Might Be The Budget Option
- Replies: 25
- Views: 5975
Would the long flash duration be a problem solely for freezing movement on an unstable setup, or is there some other reason to avoid it? Aside for the different effects on motion/vibration freezing, a long flash duration (on the order of 1/250-1/500s) has no negative effect I can think of. On the c...
- Fri Apr 08, 2011 5:53 am
- Forum: Equipment Discussions
- Topic: MP-E 65 vs Zuiko Auto-macro 38/2.8
- Replies: 21
- Views: 12613
But the continuing increase in the price of lenses like the formerly inexpensive 35mm Noflexar indicates that the market may not saturate that readily. :) This is another interesting "urban legend". I have two, tested one, and did not find it especially useful in UV photography (large focus shift b...
- Thu Apr 07, 2011 1:22 pm
- Forum: Equipment Discussions
- Topic: MP-E 65 vs Zuiko Auto-macro 38/2.8
- Replies: 21
- Views: 12613
For instance, the EL Nikkor 63 mm f/3.5 for a while used to sell (or at least to be advertised) above 1,000 $ after being reported as particularly good for UV photography, but after it was found that most of the other EL Nikkors perform just as well it fell through the floor. The old-style EL Nikko...
- Thu Apr 07, 2011 8:34 am
- Forum: Equipment Discussions
- Topic: MP-E 65 vs Zuiko Auto-macro 38/2.8
- Replies: 21
- Views: 12613
I agree that when someone talks about a nice lens prices go up pretty fast, but if noone talked about this lenses we would not know the even exist. So it is a price we have to pay for that valuable information in forums like this one Regards It is probably true, and I do expect that sellers continu...
- Thu Apr 07, 2011 1:19 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: How to kill glass fungus
- Replies: 13
- Views: 5916
A fungicide chemical that don't attack the balsam would be the best approach, but what one? You might try thymol first (it will kill growing molds but I am not certain it can kill spores). Thymol vapors act slowly, so you need to store the slides and a small amount of thymol in an air-tight contain...
- Wed Apr 06, 2011 8:29 am
- Forum: Equipment Discussions
- Topic: Functionality of Legacy Olympus OM MF Lenses with Pen Micro
- Replies: 174
- Views: 43999
Here is a comparison of lenses. The tulip was in bright sunlight, facing the sun but I used a diffuser between the sun and the flower. Exposure was locked on that for the tulip leaves under diffused light. Aperture f11 ISO 400 hand held: Olympus Zuiko OM MF 50mm f3.5 macro: I do not mean to be too ...
- Wed Apr 06, 2011 8:16 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Lepisma, Mitutoyo 10x VS nikon BD 20x (new 80X image added)
- Replies: 8
- Views: 6151
The thing as I said is that I am considering buying a 1.4xTC but difficult to find any old good ones, most 1.4X TC are modern type with AF (Which I do not need) and high prices. Maybe one of the new Kenko pro300 AF 1.4 DGX? The Kenko TCs are made by Tamron and perform quite well in general photogra...
- Tue Apr 05, 2011 12:33 am
- Forum: Equipment Discussions
- Topic: Studio Flash Might Be The Budget Option
- Replies: 25
- Views: 5975
I have a limited experience with studio strobes, but here it goes. When I have time, I might write an extended version on my web site. One of the first things I noticed is that manufacturers use two ways to rate the power of a studio strobe: Ws (Watt second) and "effective Ws". The nominal measureme...
- Tue Mar 29, 2011 11:59 pm
- Forum: Equipment Discussions
- Topic: Carl Zeiss Jena Apochromat HI 60
- Replies: 1
- Views: 1568
Carl Zeiss Jena Apochromat HI 60
This is an RMS microscope objective with variable aperture (NA 0.7 to 1.0) and non-retractable nose. What does HI mean? Is this an immersion objective?
- Tue Mar 29, 2011 10:10 am
- Forum: Equipment Discussions
- Topic: first post, questions about setup/Nikon 1x TV relay lens
- Replies: 7
- Views: 4677
I hope I did not confuse the situation when I said "Seems like it would only make sense with a 1" or smaller sensor". I was referring to the odd nomenclature manufacturers use for sensor size. The imaging area of a 1" sensor actually measures about 12.8mm x 9.6 mm with a diagonal of 16mm. As such, ...
- Tue Mar 29, 2011 1:59 am
- Forum: Equipment Discussions
- Topic: first post, questions about setup/Nikon 1x TV relay lens
- Replies: 7
- Views: 4677
16 (mm) is the diameter of the field stop, which normally determines the field of view of the eyepiece before magnification (e.g. a 10x 21 eyepiece has a field stop of 21 mm and an apparent field of view through the eyepiece of 210 mm, as seen from a standard distance of 250 mm). In this case, since...
- Tue Mar 22, 2011 1:53 am
- Forum: Equipment Discussions
- Topic: Newport Linear Stage(s) on fleabay.
- Replies: 18
- Views: 6948
ebay 170618843424 good price...cut off the top .unbolt the bottom I have no direct experience with this particular Zeiss scope, but all the other Zeiss models I know (mainly Ultraphot, Standard, Universal and Photomicroscope) have focusing racks with the fine focusing range limited to about 2 mm. I...
- Mon Mar 21, 2011 12:06 pm
- Forum: Equipment Discussions
- Topic: Newport Linear Stage(s) on fleabay.
- Replies: 18
- Views: 6948
... A better actuator for that stage might be the 5DM11-5: http://search.newport.com/?q=*&x2=sku&q2=DM11-5 ... --Chris I agree with Chris on everything. About differential micrometers, the total travel of the fine portion is limited (0.1 mm in the suggested model), which limits the stack thickness ...
- Mon Mar 21, 2011 7:25 am
- Forum: Equipment Discussions
- Topic: Newport Linear Stage(s) on fleabay.
- Replies: 18
- Views: 6948
These stages are generally very good, especially if new or lightly used. However, the ones you suggest only have 5 mm of travel (according to the seller). This is enough only for rather small subjects at relatively small magnification, and in addition you need at a minimum an additional coarse focus...
- Mon Mar 21, 2011 3:09 am
- Forum: Equipment Discussions
- Topic: Computer-controlled focuser for Meiji stereomicroscopes
- Replies: 4
- Views: 1662
Computer-controlled focuser for Meiji stereomicroscopes
I recently became aware of this commercial computer-controlled focuser for Meiji microscopes. It seems possible to adapt it to other microscopes as well: http://www.kdvelectronics.eu/focusdrive/FocusDrive.html It seems quite a bit overpriced, considering that it includes neither microcontroller nor ...